https://gamesartist.co.uk/old-man/
Character Artist, Carlos Soares has created this Old Man to study the Xgen hair workflow, take a look at the beautiful details on the face! In this article, he talks about, blockout, topology, UV, pores & wrinkles, baking, texturing, eyes, hair workflow, clothing, lighting and rendering.
https://www.artstation.com/carlos_soares
https://www.artstation.com/artwork/Je3BXR